Flex hereO GPS Watch: Scaling IoT Wearable Production

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Flex hereO GPS Watch: Scaling IoT Wearable Production

Case study of hereO partnering with Flex to redesign and scale production of a GPS tracking watch for children from prototype to high-volume manufacturing.

Published

June 4, 2026

Read time

3 min read

Source

hereO developed the world's smallest cellular-connected GPS watch for children after four years of R&D. Facing rapid global demand, the startup partnered with Flex to apply Design for Manufacturing, Liquid Silicone Rubber Overmolding, and Sketch-to-Scale solutions. Flex handled mechanical engineering, supply chain, and high-volume production, enabling hereO to shift focus from operations to product development and market expansion.

Key takeaways

hereO reduced device size by 50% and achieved 2-3 day battery life through proprietary ML location engine

Flex applied Design for Manufacturing to scale output from 1,000 to 100,000 units

Liquid Silicone Rubber Overmolding cut assembly steps and improved water and shock resistance

Partnership freed hereO resources to focus on design, telecom partnerships, and distribution growth

hereO expanded pipeline to include Pet Tracker, Tracker of Things, and Senior GPS Watch

Market overview

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